Mathematics High School

-9=2(18)+9y how do you work it out

Answers

Answer 1

Answer:

y = -5

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

-9 = 2(18) + 9y

Step 2: Solve for y

Multiply:                                   -9 = 36 + 9ySubtract 36 on both sides:     -45 = 9yDivide both sides by 9:           -5 = yRewrite:                                     y = -5

Step 3: Check

Plug in y to verify it's a solution.

Substitute:                    -9 = 2(18) + 9(-5)Multiply:                        -9 = 36 - 45Subtract:                       -9 = -9

Related Questions

WILL MARK BRAINLIEST!!! Can someone help me wit dis question?

Given y = 9x - 4, what is the y-intercept?

a.) 4
b.) -4
c.) 9

Answers

Answer:

B.) -4

Step-by-step explanation:

y=mx+b

b is equal to the y-intercept.

Answer:

-4

Step-by-step explanation:

The slope intercept form is y = mx + b.

m = slope

b = y-intercept

since b = -4, the y-intercept is -4

who can help me and answer the 2 questions for me :(

Answers

For Question 1:
angle CAB, angle ABC, angle BCA

Question 2: angle BCD

2. Find the value of x.
17x - 3
17X-13-ax+3
9x + 13

Answers

Answer: X=3.25

Explanation:
17(3.25)-13=42.25
9(3.25)+13=42.25

Can you give me brainliest? Thank you if you do. Have a good day!

Based on the HL congruence rule, the value of x, is calculated as:

x = 2.

How to Find the Value of x in the Triangle Using the HL congruence theorem?

Both triangles that share the same side and have corresponding angle 90 degrees and a pair of corresponding congruent hypotenuse are congruent  to each other based on the HL congruence theorem.

This means that:

17x - 3 = 9x + 13

Solve for the value of x:

17x - 9x = 3 + 13

8x = 16

Divide both sides by 8:

8x/8 = 16/8

x = 2

The value of x is: 2.

Learn more about HL congruence theorem on:

https://brainly.com/question/29615095

#SPJ6

13. What is the cube root of 217 to the nearest
integer?
A. 6
B. 15
C. 72
D. 109
86
Math Aca

Answers

Answer:

A

Step-by-step explanation:

Answer:

The answer is

A.6

Mass = 65 kg
Acceleration = 0.3 m/s2
Force =

Answers

Answer: 19.5 N

Step-by-step explanation:

Answer:

The answer is 19.2N

Step-by-step explanation:

F=m a

F=64*0.3=19.2N

Please help will brainlist

Answers

Answer:

4 is C for sure!

Step-by-step explanation:

Is 0.000027 greater than 270?

Answers

Answer:

no because it is lower than 1 and 270 is higher

Answer:

No, because 0.000027 is a decimal. Any decimal with 0. *something* will be less than one. 27 is more than one. Thus, the statement is false.

Will give brainliest if correct.

Answers

Answer:

X Intercept: (-2, 0)

Y Intercept: (0, 7)

Explanation:

Plug y = 0 into the equation and solve the resulting equation 7x = −14 for x. Plug x = 0 into the equation and solve the resulting equation −2y = −14 for y.

Answer:

(- 2, 0 ) and (0, 7 )

Step-by-step explanation:

To find the x- intercept let y = 0 in the equation and solve for x

7x - 2(0) = - 14, that is

7x = - 14 ( divide both sides by 7 )

x = - 2 ⇒ (- 2, 0 ) is the x- intercept

To find the y- intercept let x = 0 in the equation and solve for y

7(0) - 2y = - 14, that is

- 2y = - 14 ( divide both sides by - 2 )

y = 7 ⇒ (0, 7 ) is the y- intercept

The atomic number of an element B is 17. The number of electrons in its ion B will be:
(a) 17 (b) 18. (c) 19. (d) 20.
answer with explanation

Answers

Answer:

18

Step-by-step explanation:

don't step answer. Because I am lol

Simplify 7 +(-3). (1 point)

Answers

Answer:

4

Step-by-step explanation:

7-3=4

Answer:

7-3=4

Step-by-step explanation:

Im not quite sure if this is what you were asking for but here

URGENT HELP! VIEW PICTURE​

Answers

Answer:

it 2

Step-by-step explanation:

Answer:
I think it’s 3(n/5)

Explanation:

find the slope of the line if it exists
a. the slope is ___
b. the slope is undefined
​

Answers

Answer:

The slope is -4/3.

Step-by-step explanation:

Slope = rise/run. Starting at (3, -1), you go up 4 units and over to the left 3 units to (0,3). Since it's a line of decay, the slope is negative.

Answer:

the slope should be -4/3

Step-by-step explanation:

you go down 4 and to the right 3 so I am pretty sure it is -4/3

Find the sum of the complex numbers.
(3 + 5i) + (10 + 71)
O A. 13 + 121
O B. 7 + 121
O
C. 13 + 2i
O D. 7 + 21

Answers

Answer:

A

Step-by-step explanation:

(3 + 5i) + (10 + 7i) =

3 + 5i +10 + 7i =

3 + 10 + 5i + 7i =

13 + 12i

Please help this is due today :)

Answers

The slope is 1/2
(Remember rise/run)
The full equation would be 1/2+1

A polygon has 6 sides . The interior angles measures are 118°,127°,111°,123°,126°.and x° find the values of x .

Answers

Let’s use a hexagon as the shape, Add all those up plus x =720. 720 is the sum of all interior angles of a polygon

The value of 'x' is 115 degrees and this can be determined by using the sum of interior angles property of hexagon.

Given :

A polygon has 6 sides. The interior angles measures are 118°, 127°, 111°, 123°, 126°, and x°.

The following steps can be used in order to determine the value of x which is an interior angle of a hexagon:

Step 1 - According to the given data, the given polygon has 6 sides means that it is a hexagon with interior angles 118°, 127°, 111°, 123°, 126°, and x°.

Step 2 - The sum of interior angles of a hexagon is 720 degrees.

Step 3 - So, the values of 'x' can be calculated by using the below expression:

118 + 127 + 111 + 123 + 126 + x = 720

Step 4 - Simplify the above expression.

605 + x = 720

x = 720 - 605

x = 115 degrees

For more information, refer to the link given below:

https://brainly.com/question/4083236

The amount of women to men in a Halloween costume contest was 8 to 4. Write 3 equivalent ratios to match this ratio!!!!! ASAP PLS HELP DUE IN 1 HOURRR

Answers

Answer:

1)4:2     3) 2/1 (2 over 1)    5) 4 to 2

Step-by-step explanation:

Answer:

A, C, E

Step-by-step explanation:

?????

Simplify (1/2)4. Plz answer fast

Answers

Answer: 2

Step-by-step explanation: 1/2 x 4 = 4/2 = 2/1 = 2.

Jessica added the two distances in the table to get a sum
of 26.95 miles.
Jessica's Running Journal
Week 1
11.9 miles
Week 2
15.05 miles
Explain the steps you use to determine if Jessica's
answer is reasonable.
LOTS OF POINTS HELP ASAP

Answers

Yes her answer is reasonable 11.9 + 15.05 = 26.95

Answer:

Round to the nearest whole number and then add the numbers. The estimate should be close in value to the actual sum.

Step-by-step explanation:

The total charge on 4 particles is −36 units. All the particles have the same charge.

need asap What is the charge on each particle?

−9 units
−8 units
8 units
9 units

Answers

The answer is -9...........

Answer:

-9

Step-by-step explanation:

If you multiply 9x4 you get 36. its minus 36 so therefor it has to be -9

Hope this helps :) <3

Solve the equation. a4−56=−12 a=

Answers

a4-56=-12
Explanation is in the picture

Please answer will give brainliest if correct.

Answers

Answer:

x intercept (2,0)

y intercept (0,-4)

Answer:

x intercept (2,0)

y intercept (0,-4)

Step-by-step explanation:

give me brainliest

Are the lines parallel? 2x + 3y = 6 and 2x + 3y = 10

Answers

This is a website called Desmos but to solve this all you have to do is find slope and if they are reciprocals(are opposite of each other) they will be perpendicular. Hope this helps :)

Answer:

the fact that this dosen´t the question like

Step-by-step explanation:

A delivery driver earns $221 for 17 hours of work. Assuming he is paid by the hour, how much will he earn in 12 hours?

Answers

Answer:

156

Step-by-step explanation:

221/17=13

13*12=156

Answer:

$156

Step-by-step explanation:

221/17=x/12

221*12=17x

2652=17x

156=x

c = x + a / b solve for the x

Answers

Answer:

x= C-a/b

Step-by-step explanation: Ik alllLlLLlllLlLL

(my other account is actingqueen2468 but i forgot my password)

Suppose a system of equations was solved my elimination and the resulting equation was 0=3. Which of the following statements is/are true.

a. The slopes of the two equations in the system are the same but their y-intercepts are different.

b. The system is an independent system.

c. The graphs of the two equations would intersect at the point (0,3).

Answers

Answer:

a. The slopes of the two equations in the system are the same but their y-intercepts are different.

Step-by-step explanation:

The system resulting in equation 0=3 means:

There is no solutionThe lines are parallel as no intersection

Correct choice is:

a. The slopes of the two equations in the system are the same but their y-intercepts are different.

Which pair of angles are alternate exterior angles?

A) 1 and 8
B) 1 and 7
C) 2 and 7
D) 2 and 9

Answers

Answer:

Option (C)

Step-by-step explanation:

From the picture attached,

Two lines are the parallel lines and one line is intersecting these lines at two distinct points.

m∠3 = ∠6 [Alternate interior angles]

Since, angles 2 and 7 are the vertically opposite angles,

m∠2 = m∠7 [Alternate exterior angles]

Therefore, angles ∠2 and ∠7 are the pair of alternate exterior angles.

Option (C) is the answer.

Please help me out!​

Answers

I don’t even know sorry I will try and help out next time

What is the value of cos(x/2) if tan x=1/2 and x is in quadrant III

Answers

Answer:

Step-by-step explanation:

The value of cos(x/2) is required.

The required value is [tex]\cos(x/2)=-\sqrt{\dfrac{5-2\sqrt{5}}{10}}[/tex]

Trigonometry

The given value is

[tex]\tan x=\dfrac{1}{2}[/tex] where x is in quadrant III.

From trigonometric identities we have

[tex]\sec^2x=1+\tan^2x\\\Rightarrow \sec^2x=1+(\dfrac{1}{2})^2\\\Rightarrow \sec^2x=\dfrac{5}{4}\\\Rightarrow \cos^{2}x=\dfrac{4}{5}\\\Rightarrow \cos x=\dfrac{2}{\sqrt{5}}[/tex]

If x lies in quadrant III then x/2 lies in quadrant II.

Cos is negative in quadrant III so,

[tex]\cos x=-\dfrac{2}{\sqrt{5}}=-\dfrac{2\sqrt{5}}{5}[/tex]

[tex]\cos \dfrac{x}{2}=\pm \sqrt{\dfrac{1+\cos x}{2}}\\ =\pm\sqrt{\dfrac{1-\dfrac{2\sqrt{5}}{5}}{2}}\\ =\pm\sqrt{\dfrac{5-2\sqrt{5}}{10}}[/tex]

Since, x/2 lies in the second quadrant and cos (x/2) is negative.

The required value is [tex]-\sqrt{\dfrac{5-2\sqrt{5}}{10}}[/tex]

Learn more about trigonometry:

https://brainly.com/question/24349828

Do it right plss I need good grades

Answers

Answer:its yhe one on the right

Step-by-step explanation:

Answer:

138 per 6 is the better deal

Step-by-step explan

$23 per g is the unit rate

Subtract 5x^2+8x-11 from 3x^2+8x-7

Answers

Answer: -2x^2+4

Explanation: First you’d need to rewrite the equation as (3x^2+8x-7)-(5x^2+8x-11). Then since you are subtracting, distribute the negative to the right side which will then give you -5x^2-8x+11 since you flip the signs. Then simply combined like terms. -5x^2 + 3x^2 is -2x^2. Then 8x-8x is 0 and lastly, +11-7 is 4. So in order, all together, your answer is -2x^2+4.
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